Tests

SchengenVisaApi/VisaApiTests/Tests/Application/Validation/Applicants/NameValidatorTests.cs

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+using System.Text;
+using ApplicationLayer.Services.Applicants.Models;
+using ApplicationLayer.Services.Applicants.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.Applicants.Requests;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Applicants
+{
+    public class NameValidatorTests
+    {
+        private static IValidator<NameModel> validator = new NameModelValidator();
+        private static NameModelFaker faker = new();
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should throw for empty first name
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyFirstNameShouldThrow()
+        {
+            var name = faker.Generate();
+            name.FirstName = null!;
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.FirstName))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should throw for empty surname
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptySurnameShouldThrow()
+        {
+            var name = faker.Generate();
+            name.Surname = null!;
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.Surname))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return no errors for empty patronymic
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyPatronymicShouldReturnNoErrors()
+        {
+            var name = faker.Generate();
+            name.Patronymic = null;
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.Patronymic))
+                .Should().BeEmpty();
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return error for too long first name
+        /// </summary>
+        [Fact]
+        private async Task ValidateForLongFirstNameShouldReturnError()
+        {
+            var name = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('h', ConfigurationConstraints.NameLength + 1);
+            name.FirstName = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.FirstName))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return error for too long surname
+        /// </summary>
+        [Fact]
+        private async Task ValidateForLongSurnameShouldReturnError()
+        {
+            var name = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('h', ConfigurationConstraints.NameLength + 1);
+            name.Surname = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.Surname))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return error for too long patronymic
+        /// </summary>
+        [Fact]
+        private async Task ValidateForLongPatronymicShouldReturnError()
+        {
+            var name = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('h', ConfigurationConstraints.NameLength + 1);
+            name.Patronymic = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.Patronymic))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return error for not valid firstname
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidFirstNameShouldReturnError()
+        {
+            var name = faker.Generate();
+            name.FirstName = "&&7!**|";
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.FirstName))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return error for not valid surname
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidSurnameShouldReturnError()
+        {
+            var name = faker.Generate();
+            name.Surname = "&&7!**|";
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.Surname))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return error for not valid patronymic
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidPatronymicShouldReturnError()
+        {
+            var name = faker.Generate();
+            name.Patronymic = "&&7!**|";
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Where(error => error.PropertyName == nameof(name.Patronymic))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="NameModel"/> validator that should return no errors for valid name
+        /// </summary>
+        [Fact]
+        private async Task ValidateForValidNameShouldReturnNoErrors()
+        {
+            var name = faker.Generate();
+
+            var result = await validator.ValidateAsync(name);
+
+            result.Errors.Should().BeEmpty();
+        }
+    }
+}